Carbureter.



H. W. ALLEN.

CARBUHETER.

APPLICATION FILED MAYZZ, I9I4.

m6111911 May18,1915.

2 SRPMS-sainz Arrogzvfks' lUNITED STATES i aTnNr onnron.

i HERBERT WILLIAM ALLEN, OF COALINGA, CALIFORNIA.

.'.To all whom'z't'may/ 'concern Be it known that I, HERBERT W. ALLEN,

a citizen of the United States, and a resident of Coalinga, in the countyof Fresno and State of California, have inventedan Im provement in Carbureters, of which the fol- `llowing is a specification.

My invention is an improvement in carbureters, and has for its object to provide a device of the character specified, wherein dampers are arrangedbetween the inlet and .the outlet 'of the carbureter for controlling lthe passage oi the fuel and the air therethrough. and wherein a valve is provided for controlling' the supply of fuel and wherein a controlliire,f shaft is provided connected to` the dampers and Ato the valve, for simultaneously operating both valve and damper.

A further object is to provide a new andv improved form of baille, for use in the mixing chamber, to insure the thorough and uniform mixture of the fuel and the air.

In the drawings: Figure 1 is a top plan.

view. of the improved carburetor; Figs. 2 and 3 are sections on the line 2 2 and 34-3 respectively, of Fig. 1; Fig. 4 is a top plan view of a mixing chamber baille, Fig. 5 is a transverse section of the saine, and Fig. (S is an enlarged sectional view showing the ball valve and its holding spring.-

The present embodiment of my invention comprises a casing consistingr of an upper section 1, and a lower section, the said section comprising a tubular body 2 and a marginal flange. 3 integral with the body and lapping on a similar flange 4 of the upper section.

Screws'i are passed through openings in the flange 3 andengage threaded openings in the flange 4, to secure the sections together. The section 2442 is provided with an elbow, the said elbow consisting of an arm 6 at the axis of the body, and an arm 7 extending at right angles to the arm G, and passing out through the body of the said lower section.

upwardly extending elbow 11 which opens l CARBURETER.

11,140,232. Specification 0f Letters Patent Patented May 18, 191 5..

f 'Application ined May 22, 1914. serial No. 840,237. i

laterally, in the. opposite direction to `the arm 7, and the said elbow is provided with a marginal Harige 12 at its outer end.

The elbow 11 is the .outlet of the upper Isection of the casing, and a cylindrical mixing chamber 13 is connected with the elbow, the said chamber having flanges l14 and 15 respectively at its ends, and the flange 14. fits against the flange 11 oi. the elbow, and is securedpthereto by screws 16,-,as shown. A series of the balllesshown in igs. 4 and 5 is arranged within the cyllindrical casing 13, andthe said casing' is internally enlarged or reamed, as shown at '17, to receive the ba'fl'les.

Each 'of ,the bailles is formed lfrom a. disk 1S of metal of suitable diameter and thick ness, the disk being radially slotted at spaced intervals, and at Jrhe outer end of each of the radial slots an. archv shapru'l slot is provided extending' transversely of the radial slot. The material at each side of the radial slot is then bent laterally, to form for each radial slot a pair of laterally extendingr wings or vanes 19. Thd. radial slots are spaced apart from the center of the disk at their inner ends, as shown in Fig. 4, and each Wing or vane 19 is of greatest height at its outer end, gradually decreasing in heighttoward the center olE the disk.

The individual ba'flles are separated by rings 20, which are of a size to lit closely within the casing 13. One of the rings 20 is ari-ranged at the inner end of the easing, and a baille is fitted in the easing,r adjacent to the ring. A second ring is then placed and a second. baffle, and the rings and the ballles are arranged alternately, until the easing is filled, a ring being' last inserted.

The float chamber 21 is a cylindrical casing. having,r a relnoval'ile head 22, connected to the casing by screws 23, and the float 24 within the chamber is pivoted to one end of a lever 25. The lever is pivoted to the casing intermediate itsends as indicated at 2G and a link 27 connects the opposite end of the lever from the Vfloat with a guideQS of cross or X shape. A ball valve 99 ar ranged at the lower end of the guide,- and the ball seats at the inner or upper end oi the bore o1E a nipple 30. The Hoat chamber 21 is provided with a radial extension at the side adjacent to the casing,r 1, within which the link 27 and the guide 28 are placed, and

a plug 31 is threaded into an opening e the top of the casing, to permit access to the link, the guide and the valve.

The float chamber is connected to the lower section 2 of the carbureter by an integral connection with the flange 3, before provided with a bearing 33 which fits over the upper end of the valve, and a set screw 34 is threaded through the bearing into engagement with the needle valve, to secure v the arm thereto.

. The upper end ofthe sleeve 8 is reamed or counter-bored, and a coiled spring 35 is seated in the reamed or counter-bored portion, the upper end of the spring bearing against the bearing 33 of the arm. The outer end of the arm is provided withA a longitudinal series of openings 36, and the arm is connected to one end of the lever 37 by means of a connecting rodv38. The rod 38 has its ends threaded and each of the said ends is engaged with an intertially threaded socket 39, each socket havingv a pair of parallel arms extending longitudinally of therod 38. A

The arms 40of one of the sockets engages opposite faces of the link 36, and the said arms have openings registering with each other, and adapted to register with one ofv the openings 36 of the arm, to receivel a pin 4 1 for pivoting the arms to the arm 32.

The arms of the otherl socket engage 'opposite faces of the lever 37, and-the lever is provided withI a longitudinal series of openings 42, with one ofwhich the openings of the arms are adapted to' register for receiving a pivot pin 43.

Locknuts 44 are arranged on the rod-38 at each socket, to hold the sockets in adjusted position. The ends of the rods 38 are oppositely threaded, and it will be obvious that the distance between the arm 36 and the lever 37, that is the eifective length of the rod 38, may be varied. The lever 37, before mentioned,'is provided with a central bearing 45 which is .journaled on a control shaft 46, held in bearing arms 47 and 48 extending laterally from the upper section 1 of the carbureter casing. The lower end of the shaft 46 is reduced, and the reduced portion engages the bearing arm 48, the shoulder formed between 'the reduced portion and the body portion engaging the upper lace of the bearing arm.V A lever`49 is provided with a central bearing for engaging the control shaft,

and the said lever is. arranged between the bearing arms 47 and 48.

The bearings 45 for the lever 37 and 50 for the lever 49 are heldto the control shaft by set screws 51, and the opposite ends of" the levers 49 are connected to the. dampers. The dampers 52 and 53 are arranged within .the casing 1, on opposite sides of theneedle iyalve 9. Each damper is a cylindrical body,

arranged to rotate within a cylindrical chamber 54 .for the damper 52 and 55 vfor the damper 53, formed in the casing l. Each damper is provided `with an axial stem 56 and 57 respectively, and arms 58 and 59 are connected with the respective journal pins. Each arm -is provided with a bearing for engaging the journal pin, and

sets screws 60 are threaded through the arms vinto engagement with. the journal pin, to

hold the pins. 4

Each of the dampers is, as before stated. approximately cylindrical, but intermediate its ends each damper is provided with a. cirarms in adjusted position en the cumferential passage.

Referring to Figs. 2 and 3, it will be evident that when ldampers 52 and 53 are in the position shown in Fig. 2, the inlet through the carbureter will be practically closed, while when the dalnpers return to bring the circumferential passages 61 adjacent, there will be a passage forthe fuel issuing from the elbow 6 7, and for the airv entering through the lower section crhead 2 of the carbureter.

Each end of the lever 49 is connected to the adjacent damper, the connection to one` damper lbeing by means of a connecting rod 62 `and to the other damper by means of a connecting rod 63.' rEhe connecting rodsI 62 and 63 correspond to the connecting rod 38-3940, before described. The connecltion -of the connecting red with the controlling arm of the damper is a universaljointy connection, as is also the connection of the said rod 62 and 63 with the lever49, as shown in Figs. 1 and 2.

The dampers 52 and 53 are engaged lon gitudinally and at their outer and lower vsides by means of shoes 64, each of theshoes being arranged. within a recess 65 extending longitudinally of the adjacent 'chamber 5i or 5.5. The face' of the shoe that engages the damper is shaped to iit the damper closely', and the shoes are .pressed into close Contact with the dempers by springs 66, the said springs being arranged withinthe recesses beneath theshoes. The shoes act also as packing rings, for the dampers.

The manifold of the engine will be connected to the flange 15 of the mixing chamber, and an arm,67 is connected to the upper en'd ofthe control shaft 46, above the lever l37. The'said arm 67 .is provided with a ing the screw threads of wearin'one' direction, and eliminati-ng irregularities. The control shaft 46 when oscilla/ted in either direction will oscillate thef'djampers in a direction to open or close the'pas'sage for the fuel and air, that is to makethe said passage of greater or of less area.- JFT/lie control shaft also controls the needle eva-life, so 'that the amount of gasolene admitted and the amountu of air admitted are both controlled by the same control shaft. After the elements have been adjusted to provide for the desired relative proportion of the fuel and air, the relative amount of the mixture is afterward controlled in accordance with conditions. The

extent of the movement of the cylinder dampers and the extent of the movement of the needle. valve may be varied by the connecting rods 38, 62 and 63, in accordance with the character of fuel used. The float 24.n1aintains the fuel at a certain predetermined level in thevertical'arm 6 of the elbow 6 and 7.

. The connection between the control shaft and the needle valve and the dampers is only varied foi clifferent characters 5f fuel-,

and with a fuel of a certain character, when fonce adjusted no further adjustment is re quired, since the 'carbureter will give at all times the proper proportion of fuel and air, and at all positions, so that under all conditions there is a uniform mixture provided.

The ball valve 29 sets in a pocket in the lower end of the guide 28, and a coil spring i is provided for fielding the ball in the pocket.

It is obvious however that the guide 28 might be provided lwith a cage at its vlower end for holding the ball.

ln operation the parts having been once adjusted, the controlV of the fuel and the air is by way of the arm or lever 67. When the lever or arm is moved in one direction the needle valve, will be' open, and the dampers will be moved to admit the mixture. The air enters by way of the port 2, and vaporizes a portion of the liquid fuel in the arm G ofthe elbow, and carries the vaporized fuel through the elbow 1l, and through the mixing chamber to the manifold of the engine. The vanes 19 of the baffles and the baflles themselves insure a thorough, complete and uniform mixture of the fuel and ing a lateral outlet at its top and an' inlet' at the lower end, a fuelsupply pipe opening into the carbureter at the inlet and having a verticallportim atthe axis of the ini let, means for supplyn."i fuel to the supply `pipe and for retaining the fuel at a predetermined level in the vertical portion of the supply pipe, a needle valve coperating with the upper end ofthe vertical portion of the supply pipe, the casing having an internally threadedsleeve in alinement with the vertical portion of the supply pipe and the needle valve having a threaded engagement with the sleeve, said casing having cylindrical chambers between the sleeve and the inlet `and extending transversely of the needle valve and on opposite sides thereof, approximately cylindrical dampers in the chambers and contacting at their adjacent sides, each damper having a circumferen-- tially extending passage intermediate its ends, the passages registering, and gradually vincreasing in cross sectional area toward one end, a controlling shaft journaled parallel with the needle valve, the needle valve and the shaft having registering radial arms, and an extensible and contractible connection between the arms, a lever secured to the shaft intermediate the ends of the lever, each damper having'an axial extension at one end, and the extensions being at the opposite ends of the casing, each extension having a radial arm, and an extensible and contractible connection between each arm and the adjacent end of the last named lever.

2. A carbureter comprising a casing having a lateral outlet at its top and anv inlet at the lower end, a fuel supply pipe opening intothe carbureter at the inlet and having a vertical portion at the axis of the inlet, means for supplying fuel to the supply pipe and for retaining the fuel at a predetermined level in the vertical portion of the supply pipe, a needle valve coperating with the upper end of the vertical portion of the supply pipe, the casing having an internally threaded-sleeve .in alinement with the vertical portion ofthe supply pipe'and the needle valve having a threaded engagement with the sleeve, 'said casing having cylinilo drical chambers between the sleeve and' the inlet and extending transversely of the needle valve and on opposite sides thereof,

` approximately cylindrical dampers in the chambers and contacting at their adjacent sldes, each damper having a circumferenltially extending passage intermediate its ends, the passages registering, and gradually increasing in cross sectional area toward one end, a controlling shaft journaled parallel with the needle valve, the needle valve and the shaft having registering radial arms, and an extensible and contractible 4connection between the arms, and a connection between the controlling shaft and the dampers for simultaneously moving the dampers in the same direction.

3. A carbureter comprising a casing having a.' lateral outlet at its top and an inlet at the lower end, a fuel supply pipe opening into the carbureter at the inlet and having a vertical portion at the axis of the inlet, means for supplying fuel to the supply pipe and for retaining the 1fuel at a predetermined level in the vertical portion of the supply pipe, a needle valve coperating With the upper end of the vertical portion of the supply pipe, the casing having an internally threaded vsleeve in alinement with the vertical portion of the supply pipe and the 'needle valve havin a threaded engagement with the sleeve, said casing having cylindrical chambers between the sleeve and the inlet and extending transversely of the needle valve and on opposite sides thereof,.

approximately cylindrical dampers in the ychambers andl contacting at their adjacent sides, each damper having a circumferentially extending passage intermediate its ends, the passages registering, and gradually increasing in cross sectional area `toward one end, and a common means for simultaneously moving the dampers in opposite direction and for controlling the needle valve i 4. A carbureter comprising a casing having an inlet at-its lower end and a lateral outlet at its upper end, a fuel supply pipe held at the axis of the inlet, means in connection with the carbureter for retalnin fuel at a predetermined level in the sai supply pipe, a valve coperating with the upper end of the supply pipe for controlling the fuel supply, said casing having cylindrical chambers extending transversely of the supplyI pipe and between the same and the outlet, cylindrical dampers in the chambers and contacting at their adjacent surfaces, each damper having intermediate its ends a circumferential passage extending over approximately half the circumference of the damper and gradually increasing in cross Ysectional area in one direction, a common means for simultaneously moving the dampers in a direction to open orclose the communication between the inlet and outlet and to simultaneously open and yclose the valve, said 4casing having at the outer side of said chambers and near the lower side v 

